Java中的split和join

import org.apache.commons.lang3.StringUtils;

public class SplitJoin {
public static void main(String[] args){
String str = "a|b|c|d|e|f|g";
String[] strArray = str.split("[|]");
for(int i=0; i<strArray.length; i++){
System.out.println(strArray[i]);
}
System.out.println(StringUtils.join(strArray, "|"));
}
}

a
b
c
d
e
f
g
a|b|c|d|e|f|g